Comparing color vision impairment in natural lens and artificial lens groups

Abstract

Objective: To determine the color vision defect in pseudophakic and phakic group. Material and Method: This was cross sectional with non-probability convenient sampling at Fathima institute of medical science, Ophthalmology Department, Kadapa. The patient’s age lied between 45 to 60 years and had a follow up after 1 month of surgery. Visual acuity taken was after refraction. All types of refractive errors after Phacoemulsification surgery (Acrylic IOL) were included. Posterior sub-capsular opacity and other types of cataract surgery were excluded. The Panel D - 15 test was used to assess color vision defect. Ethical approval was given by Research Ethical Committee. Statistical analysis was done by statistical package for social science (SPSS) version 20.0. Results: A total of 160 eyes were enrolled in this study. Among 160 eyes; 70 (44%) and 90 (56%) eyes were of males and females, respectively. The eyes were categorized in two groups, 80 (50%) were phakic and 80 (50%) were pseudophakic. Among 80 (50%) pseudophakic eyes; 32 eyes had Tritanopia (40%), 10 eyes had Deutronopia (13%), 8 eyes had Protonopia (10%), 6 eyes had combined Tritonopia and Protonopia (8%), 4 eyes had combined Deutronopia and Tritonopia (5%), 2 eyes had Protonopia and Deutronopia (3%) and 18 (23%) had no defect. Among 80 phakic eyes, 72 (90%) had no defect while Deutronopia was found in 1(1.25%) eye and Tritanopia in 7 (9%) eyes. Conclusion: Tritonopia was mostly present in Pseudophakic group while majority of Phakic group do not show color vision defect.